Long Island site 4A is located near Glen Castle Drive in Sandy Springs Georgia. The stream is found flowing perennially behind a developed neighborhood. The area around the stream is moderately forested dominated by thick underbrush along the right side of the bank.
Land Uses/Activities and Impervious Cover
A survey conducted adjacent to the water body indicated that there were no immediate impervious surfaces encroaching this site.
General Water Body and Watershed Characteristics
Site A’s reach was determined to be 283 feet extending downstream . The bank width was found to be twenty-nine feet and the stream width, fifteen feet. There were three ripples and three runs present within this stretch: the longest run extended for 100 feet. Four pools dissected the flow appearing extremely turbid compared to the rest of the stream’s reach. There was also one bend along the left bank between two runs. There was one eight inch Ductile Iron Pipe, (DIP) that extended the width of the stream bank disappearing into the ground on both the left and right side of the bank and one dry concrete flume. There was also a 100 ft stretch of riparian zone. Erosion was present indicated by a thirteen inch difference between the left and right banks. Sediment consisting of gravel and cobblestones was observed to be mostly embedded.
Additional Comments
Small fish ranging from one to three inches were observed frequently: medium sized fish between four-seven inches were not present within this reach. There were also no amphibians or reptiles observed. A few macro invertebrates were found on the site belonging to orders Odonata, (Dragonfly), and Diptera,, (Crane Flies/ Midge Flies). One species of crustacean was also seen, Procambarus acutus, (Crawfish). Alga growth was not prevalent and few aquatic plants were perceived in the stream. Small non-point source pollution was also occasionally found consisting of mixed debris: most commonly found were fertilizer bags near lawns that had disposed of excessive amounts of yard waste directly along the left bank and into the stream.
Upstream of site A looking downstream
Drainage flume
The flume hardly ever had water in it although there was a large amount of debris that washed down when it would rain.
Pooling
Pooling was an issue that was a result of channelization caused by sedimentation.
Sewer pipe
For the most part, the sewer pipe was in good shape with little erosion occurring in the immediate area.
Shelf of sand and gravel
The previously mentioned sedimentation that is creating sand and gravel shelves that is attributing to the channelization of the stream.
Overview
Long Island site 4A is located near Glen Castle Drive in Sandy Springs Georgia. The stream is found flowing perennially behind a developed neighborhood. The area around the stream is moderately forested dominated by thick underbrush along the right side of the bank.Land Uses/Activities and Impervious Cover
A survey conducted adjacent to the water body indicated that there were no immediate impervious surfaces encroaching this site.General Water Body and Watershed Characteristics
Site A’s reach was determined to be 283 feet extending downstream . The bank width was found to be twenty-nine feet and the stream width, fifteen feet. There were three ripples and three runs present within this stretch: the longest run extended for 100 feet. Four pools dissected the flow appearing extremely turbid compared to the rest of the stream’s reach. There was also one bend along the left bank between two runs. There was one eight inch Ductile Iron Pipe, (DIP) that extended the width of the stream bank disappearing into the ground on both the left and right side of the bank and one dry concrete flume. There was also a 100 ft stretch of riparian zone. Erosion was present indicated by a thirteen inch difference between the left and right banks. Sediment consisting of gravel and cobblestones was observed to be mostly embedded.Additional Comments
Small fish ranging from one to three inches were observed frequently: medium sized fish between four-seven inches were not present within this reach. There were also no amphibians or reptiles observed. A few macro invertebrates were found on the site belonging to orders Odonata, (Dragonfly), and Diptera,, (Crane Flies/ Midge Flies). One species of crustacean was also seen, Procambarus acutus, (Crawfish). Alga growth was not prevalent and few aquatic plants were perceived in the stream. Small non-point source pollution was also occasionally found consisting of mixed debris: most commonly found were fertilizer bags near lawns that had disposed of excessive amounts of yard waste directly along the left bank and into the stream.LIC4A-site | LIC4A-map | LIC4A-stream | LIC4A-water | LIC4A-bacterial | LIC4A-urban ecology | LIC4A-conclusion | previous | main page